CVE-2026-40894

MEDIUM

MEDIUM Priority: 0.02 BB Relevance: 71/100

Published: 2026-04-23 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network

AC: Low

PR: None

UI: None

S: Unchanged

C: None

I: None

A: Low

Description

OpenTelemetry dotnet is a dotnet telemetry framework. In OpenTelemetry.Api 0.5.0-beta.2 to 1.15.2 and OpenTelemetry.Extensions.Propagators 1.3.1 to 1.15.2, The implementation details of the baggage, B3 and Jaeger processing code in the OpenTelemetry.Api and OpenTelemetry.Extensions.Propagators NuGet packages can allocate excessive memory when parsing which could create a potential denial of service (DoS) in the consuming application. This vulnerability is fixed in 1.15.3.

Weakness Classification (1)

CWE-789

Affected Software (3)

Vendor	Product	Version
opentelemetry	opentelemetry	0.5.0 – 1.15.3
opentelemetry	opentelemetry.api	0.5.0 – 1.15.3
opentelemetry	opentelemetry.extensions.propagators	1.3.0 – 1.15.3